| Acronym | Meaning |
 | NOAA | National Oceanic And Atmospheric Administration |
| LOC | Library Of Congress |
| IHS | Indian Health Service |
| AFS | Air Facility Sub-System |
| USMC | United States Marine Corps |
| PPQ | Plant Protection And Quarantine |
| UPU | Universal Postal Union |
| OFHEO | Office Of Federal Housing Enterprise Oversight |
| FBIS | Foreign Broadcast Information Service (see WNC) |
| NODC | National Oceanographic Data Center |
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